Jon Hamilton Jon Hamilton is a correspondent for NPR's Science Desk. Currently he focuses on neuroscience, health risks, and extreme weather.

Months after a concussion or other traumatic brain injury, you may sleep more hours, but the sleep isn't restorative, a study suggests. iStockphoto hide caption

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A Concussion Can Lead To Sleep Problems That Last For Years

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Half Your Brain Stands Guard When Sleeping In A New Place

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Ian Burkhart prepares for a training session in Columbus, Ohio. To move muscles in Burkhart's hand, the system relies on electrodes implanted in his brain, a computer interface attached to his skull, and electrical stimulators wrapped around his forearm. Lee Powell/The Washington Post/Getty Images hide caption

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Lee Powell/The Washington Post/Getty Images

Technology Helps A Paralyzed Man Transform Thought Into Movement

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Paul Hornback was a senior engineer and analyst for the U.S. Army when he was diagnosed with Alzheimer's disease six years ago at age 55. His wife, Sarah, had to retire 18 months ago to care for him full time. Courtesy of the Hornbeck family hide caption

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Courtesy of the Hornbeck family

Big Financial Costs Are Part Of Alzheimer's Toll On Families

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I know the way to Khan's place. The Kobal Collection hide caption

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The Kobal Collection

Beam Me Up, Scotty? Turns Out Your Brain Is Ready For Teleportation

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Emotion seemed to fuel plenty of sighs by Humphrey Bogart's character Rick (right) in the 1942 film classic Casablanca, and even Rick's good friend Sam, played by actor Dooley Wilson, couldn't console him. Archive Photos/Getty Images hide caption

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Archive Photos/Getty Images

Jeffrey Iliff (left), a brain scientist at Oregon Health & Science University, has been studying toxin removal in the brains of mice. He'll work with Bill Rooney, director of the university's Advanced Imaging Research Center, to enroll people in a similar study in 2016. Courtesy of Oregon Health & Science University hide caption

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Courtesy of Oregon Health & Science University

Lack Of Deep Sleep May Set The Stage For Alzheimer's

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Brain imaging experiments found patterns associated with attention span. iStockphoto hide caption

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A Peek At Brain Connections May Reveal Attention Deficits

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An image from the Allen Institute's Brain Explorer shows gene expression across the human brain. Courtesy of Allen Institute For Brain Science hide caption

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Courtesy of Allen Institute For Brain Science

A Genetic Map Hints At What Makes A Brain Human

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The Brain's GPS May Also Help Us Map Our Memories

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Neuroscientist Takashi Kitamura works in the lab of Nobel laureate Susumu Tonegawa at the Massachusetts Institute of Technology. One of their recent projects helped identify a brain circuit involved in processing the "where" and "when" of memory. "Ocean cells" (red) and "island cells" (blue) play key roles. Takashi Kitamura/MIT hide caption

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Takashi Kitamura/MIT

30,000 Brain Researchers Meld Minds At Science's Hottest Hangout

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Researchers have used MRI scanners to learn that preemies are born with weak connections in some critical brain networks. iStockphoto hide caption

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Weak Brain Connections May Link Premature Birth And Later Disorders

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Alan Hoffman, shown with his wife, Nancy, at their home in Dumfries, Va., found that his Parkinson's symptoms improved when he took a cancer drug. Claire Harbage for NPR hide caption

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Claire Harbage for NPR

Can A Cancer Drug Reverse Parkinson's Disease And Dementia?

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Studies May Overstate The Benefits of Talk Therapy For Depression

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